Swing-frame grinder



E. R. HYDE SWING FRAME GRINDER Sept. s, y1925.

Filed Dec. 13, 1923 2 Sheets-Sheet 1 rrlrrlllllllrligrglll/ll MMM alla: H6115.

Sept. 8, 1925.

E. R. HYDE SWING FRAME GRINDER Filed Dec. 13. 1923 Z'Sheets-Sheel 2 Patented Sept. 8, 1925.

PATENT OI-Fma ELWIN R. HYDE, OE BRIDGEPORT; CONNECTICUT, ASSIGNOR To BRIDGEPORT SAFETY EMERY WHEELCOMPANY, INCORPORATED, 0E ERIDGEPORT, CONNEQTI- CUT, `A CORPORATION OF' CONNECTICUT. l

I SWING-'FRAME GRINDER. l

Applicationled December 13, 17923.` Serial No. 680,377.

-To all whom/.it may concern:

Be itknown that I, ELWINA R. HYDE, a citizen of the United States, residing at Bridgeport, countyof Fairfield, State ofv Connecticut, have invented a newv andiuseful SwingsFrame Grinder, of which the following is a specification. Y This invention relates to grinders and particularly to a swinging frame grinder, and has for an object to provide amachine of this character which may be supported onta floor or suitable foundation, in which the grinding -wheelr will have universal adjustinent and which grinder is so constructed that there are no supports Orother elements extending above a certain height to interfere with the passage of a travellin crane over the machine. f

It is also an object of the invention to provide a grinder inwhich the grinding wheel may be moved to practically any position desired and easilyvheld therein by thev operator. l f f With'the foregoing -and other objectsv in view, I' have devised the constructionillustrated in the accompanying drawings forming a partof this specification, similar reference characters being employed throughout the various ligures to indicate corresponding elements. In these drawings, Fig. 1 is a side elevation of the machine complete, a portion of the stand being broken away to more clearly show the con struction. Fig. 2 is a transverse vsection substantially i On line 2-2 of Fig. 1 on al somewhat enlarged scale.

Fig. 3 is a horizontal section substantially on line 3 3 of Fig. 1, also on an enlarged scale.

Fig. 4 is an lend elevation of the machine looking from the left of Fig. 1', and

Fig. 5 is ay top plan view of the machine. The machine comprises a base -10 'adapted to be mounted on a floor'or a suitable foundation, andmounted -upon this base to turn about avertical axis is a supportcompris-` ing a plate 11 and a pairkof'spaced uprights 12 mounted on this plate.V Theplate `is, pivoted to the base byan upright bolt or pin 13 about whichv the plate and the uprights may turn, and to facilitate this turning movement both the plate and the top ofthe has@ are provided Wthfl.L rece-way .for suit" adjusted positions.

able balls 14 to provide a ball bearing between the two-elements. Thev plate is also preferably provided with downwardly extending'fiange 15 with a ring 16 secured to the lower edge of this flangeA and extending yunder the flange 17 onv the baseto prevent the'supporttipping laterally. i i

VExtending transversely of the uprights 12 and'between the same adjacent their upper ends isy a'bolt' 18 forming a pivotal supportv for a frame 19. They bolt 18 preferablyA has shoulders 2O Vadapted to engage the inner sides of the uprights sov that when the nuts 21 are tightened'the vuprights will besecurelyl clamped against these shoulders. vThe frame. 19 comprises a pair ofy spaced memberswhich extend on-opposite sides of the bolt 18. f It is normally in an upright posi# tion, as'shown in Fig. 1,'and is adapted to" swing about .the bolt 18 asa pivot. Below the pivot the frame carriesv a housing 22 which is mounted so as to'swing ina vertical plane between the side members of the frame. carried thereby is counter balanced by a suitable weight 23,carried by the frame above its pivot.

The housing comprises a tube 24: to which are secured atits opposite ends l,suitable This housing andthe elements* elements 25 `and 26 having flanges 27 and 28 respectively., As a convenient means of suitably mounting this tube in the frame' 19'I provide a pair of clamping elements 29 which are'adapted to embracethe tubeonLv opposite ,sides thereof and which are clamped tothe tube by suitable clamping bolts 30 so that these elements are rigidly secured to the tube. `Each elementfis provided with a trunnion 31` adapted to exthe frame 19 to :form a pivotal support for `tend into a bearing in the side members of the housing and on which the housing may rock in a vertical plane. 'It will' be Vap-`l parent that by loosening the vbolts '3G-thev clamping elements 29 may be adjusted tO different positions on the tube to adjust the balance ofthe housing -andthen clam'pedvin f ing aboveand below the tube providedl with notches 33 in their' outer 'ends tok receive tie yrods-34. These tie rods are secured at The elements 29 alsov 'haveroppositely extending yarms 32 extendlieve it of a largepart of thel bendingstrains causedvby the Weight of the grinding Wheel, its mounting and the motor for drivingit.I

Mounted at one end ofthe tube, as OIL. the element 26,'isacasing5 in whichisrnoulltrA ed-fa'transverse shat"36 carrying a suitable tool, as a grinding Wheel 37. The shaft 36 is mounted in suitable ball bearings SS-armlccarf.- ries Within the casing al bevel gear 39. The grinding Wheel is carriedebytheeshaftout;VA side the casing but the upper half of this Wheel.z isl enclosed in; aguar-d 40. securedfto ther. casing; ascbythe rlateral- .extension .411. The; casing y.is mounted on; a sleeve f l2I Whi'clremf, f brac/es thew element 26, as: shown in; :Fig-,3,3 the" algfbe-ng @emenda-t0 the SLeevefby-sutable' mea-na,such.' as; screws` 43. The; sleeve; isty adapted to turn l on;l the; `element ,-26 lto: .allow 1 angular adjustment of the-:grindingfwhleelzon the"housing.-l The sleevefisepreierably; slit, ias: shown,` .at 14%,; and provided: With;v 1a, clamping screw flso that the casingmay beeither se curedcin a givenfpositionnor,thefriction bea., tvveen the sleeve :and the element 26A may I'bea adjustedto vary theresistancetoturningeofs this `isleeve ,on- :the elementi- At. thefopposite, endf ofy 'the housing.; is 1 mountedaa supportingbracket 46,-this bracket; i being preferably :secured to r ,the element 25, and ginougnted;v ong-this bracket is` an. electric.'- motorsil? Gonnectedgwith@ this motor and" extending llongitudinallyfthroughthe tube 24:I i; is @a idrive shaft- ,48, thiseshaft; preferably. running in@ ball' bearings 49 ain; the.- tube and Y 7 at-gitsopposite end. carries-a bevelv gear 50 meshingrwith the -bevellgear 39 'so-fas to form afdirect drive ,from the. motor. toy the .grind-i. ing Wheel.

Carried by the casing .is a pairofspaced handles 51 .which arepreferably orropposite-A sides cfs-the grinding yWheel and sofarranged that :they may be grasped by an operator y Wherebyhe may inovethe grinding. ;vvheel to y dierent. positions i and fhold; it. against the surface to .bei ground. As a convenient means, for :mounting these handles.. I {secure ,on-one side ,ot ,the housing; alsubst-antiallly L-shaped bracket 52L having-aa seriesaof vertically` spaced openings iin :any one -ofi \vl'1icl1-tlie handlefwhcliqin the presenti case isa pieceoflpipefmay; bei inserted. .Theshandle is ses.U curediinfthetopening by agsuitable set; seretv- 5t., Similar .Openingsil are p,revidedinl any: upright; projection 5G-fon ther, guard, 4G' anda: the:handleis.securedY in'l these openings nftheg,V sanne;V Way f by set serewsas- It Wiltbe apparentirtrom theforeguing gde-11i scription l that; the grinding; lWheel@ may g :be i meredet@ practically; anyfpeston desired The, operator'bymerely. grasping the handles f 51;; ;rocl;,the. housing in ial y,vertical planea on the.trunnionsi 31: so. that .the Wheel; may-be .7 eitliierraisedorl lowered, Itefis togbesnotedfi that ith@ 'Wheel Sicewlterfbalaeedffby the metes-.sabbattheresateedseemt have ,te f

liftanylconsiderable Weight.V The Wheel may also .be moved toward and Vromthe upright support in a horizont-al plane by swinging the :trame l9,. ,ab out its pivot v.18, and the housingwithithe..Wheel andmotor are counter ,balanced by the Weight e 23, This .swinging movement gives bothnp and "down and -horizontalwmovements to the Wheel, and as the weight of the housing and the driving elementsarexcounterbalanced the Wheel may be easily held in any desired position. The swinging movement of: thist; ramemayf, bei@ limited abyjany :suitable stops `:57, .these may be-.of; anydesiredgconstruction :but are :pref-y erably substantially U `fshapedg..metalg gstraps;V provided with openingsgf in-` the, legs. thereot c adapted to: seatfoverrpins. 5 9` ,carriedf IIby the uprights 12. Thefstops-are-sufcientlyi jexibleto 4allow the sidesor legsto be sprung inwardly to I remove .thein romfthe': pins, and l 85 allow them to be-adjustedlin dilfe'rentposif. tions,l theresiliency ofi-the stops-tendinggto maintain them' on; Athe pins.: It will:,alsobe-c` apparent that the: gpindingffwheel f may be swung .fin an fentirecirclell in aa-whorizonta-l' l plane aboutv the .base` 10,. in' .additionr to theav movements `above described, ande further-ifv more, .as the casingff is adapted LAtofturnabout the axis of theltubeft24fthewgrindingf. Wheel. may be givenanygdesired angular adjustment to grind surfaces, placed on an. anp-l gle. Thus thewvheelzma-yrbe adjustedoto practically. any position, desired andheld; therein by the operator, and these-adjust-l ments may beneasilyand-quiolrlyLmade.. Thus inJ grinding vheavy articles no setting; up fis: requiredthe article/.being placednthe .Vi-` cinity of the Lmachine and thenthewvheel is moved; yto any :desired ,position to grind as required; Tt is also especially-to be noticed that there `are no elements projecting above the Weight lv23 so; 4that-the space above the machine isentirely free, andtliere yis nothing toprevent passage oLta travelling craneover the machine.

Having thus. set-torth the nature `O'l' A'my inventionpwhaft l claim is# l. In a grinder, a base, an upright-.support'mounted on1 said baseand adapted to turnabout a-,verticalfaxigan upright frame .115 pivoted in said support, a housing pivoted-` in the frame., below the pivot. fonI th'e drame, a grinding l)Wheel carried ibythe.housingfandiA a motorpfondrivi-ng theewheell` also carried by @the @housinga 2;; In fa ,i grinder; aftbase; an upright-fv sup-;l portf 4'mounted Y,on i said;y base;` fand.l adapted tO.` vturnzabout a-vertical axis',faniupright frame@ pivoted-fin fsaidsupport on ahorizontalz aXis f, aehousing :pivoted f in: the "rameQ :below-the v 125 pivot for: ther frame .and also; :on :a horizontalI g axisn a grinding-V Wheel mounted .inithe hous;: ing` and adapted -rfor langular yYadjust-inent-:in the `housing,i .Y and t a motora carriedgby-thea hcnisilne:ion@ritiene-3th@wheel.i

3. In a grinder, a base, an upright support mounted on said base and adapted to turn about a vertical axis, an upright frame pivoted insaid support on a horizontal axis, a housing pivoted in said frame on a horizontal axis located below the said pivot for the frame, a grinding wheel, a support for the wheel carried by the housing adapted for angular adjustment thereon, means for clamping the support in different angular positions, a motor carried by the housing for driving said wheel, and one or more handles carried by the wheel support whereby it may be positioned and held during the grinding operation. Y

4. In a grinder, a base, an vupright support mounted on said base and adapted to turn about a vertical axis, an upright frame mounted to swing ona horizontal axis in said support, a counter weight carried by said frame above said pivot, a housing pivotJ ed in the frame below its pivot, a grinding wheel carried by the housing on one side of its pivot, a motor carried by the housing on the other side of its pivot, and a driving connection between the motor and wheel.

5. In a device of the character described, a base, an upright support mounted on said base and adapted to turn about a vertical axis, a frame mounted to swing in said support about a horizontal axis, a housing pivoted intermediate its -length in said frame, a tool carried by the housing on one side of its pivot arranged for angular ad justment in said housing, means for clamping the tool in different adjusted positions, a motor carried by the housing on the other side of its pivot, and a driving connection between the motor and tool.

G. In a grinder, an upright support, a pivoted frame in said support adapted to swing about a horizontal axis, a housing comprising a tube, supporting, elements clamped to said tube intermediate its lengthk on opposite sides thereof having trunnions pivoted 1n the frame and upright arms, tie

rods extending over said arms and connected to the tube adjacent its opposite ends, a grinding wheel carried by the tube adjacent one end, a motor carriedby the tube adjacent the other end, and a driving connection 'between the motor and wheel extending through said tube. f

7. In a grinder, a support, a housing kcomprising a tube, supporting elements clamped to the opposite sides of the tube intermediate the ends thereof having trunnions pivoted in the support and upright arms, tie rods extending over ysaidarms and secured to the tube adjacent the opposite ends thereof, a bracket carried by the tube at one end thereof, a motor mounted on said bracket, a casing mounted at the other end of said tube, a transverse shaft mounted in the casing, a grinding wheel mounted on said shaft, a shaft connected to the motor and extending longitudinally through the tube, and a driving connection between the two shafts.

' 8. In a grinder, a support, a housing comprising a tube pivoted intermediate its length in said support, a bracket carried by the tube at one end, a motor mounted on said bracket, a casing carried by the tube v at its opposite end and having a split bearing embracing the tube to turn on said tube, means for clamping the bearing about the tube to hold the casing in different positions, a transverse shaft in said casing, a grinding wheel carried by said shaft, a shaft extending longitudinally through the tube and connected with the motor, and a driving connection between the twoV shafts.

9. In a grinder, a base, an upright support mounted` on said base and adapted to turn about a vertical axis, an upright frame mountedl to swing-0n a horizontal axis in said support, a counter weight carried by said frame above said pivot, a housing pivoted in the frame below .its pivot, a grinding wheel carried by the housing on one side of its pivot and mounted for angular adjustment thereon, a motor carried by the housing on the other sides of its pivot, and a driving connection between the motor and wheel.

In testimony whereof I aflix my signature.

ELWIN R. HYDE. 

